What is the difference between CPAP and BiPAP? Do you pick CPAP or BiPAP? Explained. CPAP – Continuous Positive Airway Pressure CPAP (Continuous Positive Airway Pressure) is the best treatment possible for Obstructive Sleep Apnea. By delivering specific air pressure at continuous flow through a hose and finally a mask. This effect emulates a pneumatic splint, keeping your airway open…